Above 2 lines are worked perfectly but the third one is showing errors as before:
sudo apt install --reinstall gnome-software gnome-software-plugin-snap gnome-software-plugin-flatpak ca-certificates
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following package was automatically installed and is no longer required:
libxmlb1
Use 'sudo apt autoremove' to remove it.
The following additional packages will be installed:
fwupd gnome-software-common libfwupd2 libfwupdplugin5 libxmlb2
Suggested packages:
gir1.2-fwupd-2.0
The following NEW packages will be installed:
libxmlb2
The following packages will be upgraded:
fwupd gnome-software gnome-software-common gnome-software-plugin-flatpak
gnome-software-plugin-snap libfwupd2 libfwupdplugin5
7 upgraded, 1 newly installed, 1 reinstalled, 0 to remove and 6 not upgraded.
Need to get 7,302 kB/10.2 MB of archives.
After this operation, 334 kB of additional disk space will be used.
Do you want to continue? [Y/n] y
Err:1 Index of /zorinos/patches/ubuntu focal/main amd64 gnome-software-plugin-flatpak amd64 3.36.1-0ubuntu0.20.04.1+zorin1
404 Not Found [IP: 2620:2d:4000:1::3e 80]
Err:2 Index of /zorinos/patches/ubuntu focal/main amd64 gnome-software-plugin-snap amd64 3.36.1-0ubuntu0.20.04.1+zorin1
404 Not Found [IP: 2620:2d:4000:1::3e 80]
Err:3 Index of /zorinos/patches/ubuntu focal/main amd64 gnome-software amd64 3.36.1-0ubuntu0.20.04.1+zorin1
404 Not Found [IP: 2620:2d:4000:1::3e 80]
Ign:4 Index of /zorinos/patches/ubuntu focal/main amd64 gnome-software-common all 3.36.1-0ubuntu0.20.04.1+zorin1
Err:4 Index of /zorinos/patches/ubuntu focal/main amd64 gnome-software-common all 3.36.1-0ubuntu0.20.04.1+zorin1
404 Not Found [IP: 2620:2d:4000:1::3e 80]
E: Failed to fetch http://ppa.launchpad.net/zorinos/patches/ubuntu/pool/main/g/gnome-software/gnome-software-plugin-flatpak_3.36.1-0ubuntu0.20.04.1+zorin1_amd64.deb 404 Not Found [IP: 2620:2d:4000:1::3e 80]
E: Failed to fetch http://ppa.launchpad.net/zorinos/patches/ubuntu/pool/main/g/gnome-software/gnome-software-plugin-snap_3.36.1-0ubuntu0.20.04.1+zorin1_amd64.deb 404 Not Found [IP: 2620:2d:4000:1::3e 80]
E: Failed to fetch http://ppa.launchpad.net/zorinos/patches/ubuntu/pool/main/g/gnome-software/gnome-software_3.36.1-0ubuntu0.20.04.1+zorin1_amd64.deb 404 Not Found [IP: 2620:2d:4000:1::3e 80]
E: Failed to fetch http://ppa.launchpad.net/zorinos/patches/ubuntu/pool/main/g/gnome-software/gnome-software-common_3.36.1-0ubuntu0.20.04.1+zorin1_all.deb 404 Not Found [IP: 2620:2d:4000:1::3e 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
Not rebooted yet.